Bump symfony/validator from 6.3.7 to 6.4.3

Bumps [symfony/validator](https://github.com/symfony/validator) from 6.3.7 to 6.4.3.
- [Release notes](https://github.com/symfony/validator/releases)
- [Changelog](https://github.com/symfony/validator/blob/7.0/CHANGELOG.md)
- [Commits](symfony/validator@v6.3.7...v6.4.3)

---
updated-dependencies:
- dependency-name: symfony/validator
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>